Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Skanska AB
Original Assignee
Skanska Cementgjuteriet AB
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Filing date
Publication date
Application filed by Skanska Cementgjuteriet ABfiledCriticalSkanska Cementgjuteriet AB
Priority to ES337358ApriorityCriticalpatent/ES337358A1/es
Publication of ES337358A1publicationCriticalpatent/ES337358A1/es
Fremgangsmaate for endring av den innbyrdes avstand mellom konsentriske sirkler av skjaerspor som dannes av en rotasjons-borkrone under boring i grunnen, samt borkrone for fremstilling av borehull med stor diameter